کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8943358 | 1645144 | 2019 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural and optical evolution in Pb100-xAgxSe (xâ¯=â¯3, 6, 9 and 12) thin films by chemical bath deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We developed a simple room-temperature synthetic route that achieves well-crystallized Pb100âxAgxSe alloy thin films by chemical bath deposition (CBD). The strategy provides a new paradigm to synthesize Ag doped PbSe thin films in one-step. We show that uniform distributed Pb100âxAgxSe thin films can be produced, whose crystal structure, morphology, and optical properties could be tailored with Ag concentration. With increasing x, both the shape and size of crystals are changing. Besides, the growth mechanism transits from cluster to ion by ion (IBI). The optical band gap (Eg) of the thin films is found to linearly increase with x values, from 0.26â¯eV to 0.31â¯eV. The density of states (DOS) and energy band structure of Pb100âxAgxSe are calculated using the first principle method. The calculation shows that Se 4p hybrids with Ag 4d at the valance band maximum, and the contribution to the conduction band minimum is mainly from Pb 6p and Ag 5s. The energy band gap shows the same tendency with Ag concentration as that in the experiment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 770, 5 January 2019, Pages 649-654
Journal: Journal of Alloys and Compounds - Volume 770, 5 January 2019, Pages 649-654
نویسندگان
Wenran Feng, Jiali Song, Yashuang Ren, Fei Chen, Jifei Hu, Sensen Yu, Hongchun Zhao, Yiyun Tang, Song Huang,